题目

阅读下面材料，在空白处填入适当内容（1个单词）或括号内单词的适当形式（不超过3个单词）。 Louis Armstrong, the most influential jazz musicians, is considered great not only because of his     61       (achieve) but also because of his personalities.      62         (bear) in a poor family in New Orleans in 1901, instead of       63  (commit) crimes to get money like some boys in his situation, Louis would sing on the streets in order to earn a few cents from      64        (passer-by). However, at the age o如图中M表示器官，a、b表示血管，“→”表示血流方向，下列描述正确的是（　　）A. 若M是肺，则a中氧含量比b高B. 若M是肾脏，则a中尿素含量比b高C. 若M是小肠，则a中氨基酸含量比b高D. 若M是大脑，则a中二氧化碳含量比b高